World biggest bitcoin /SHA256 miner 7.7T@3400W

[fullzero]

How difficulty adjustment works:

Every 2016 blocks, the Network adjusts the current difficulty to estimated difficulty in an attempt to keep the block generation time at 10 minutes or 600 seconds.

Thus the Network re-targets the difficulty at a total difficulty time of:  2016 blocks * 10 minutes per block = 20160 minutes / 60 minutes = 336 hours / 24 hours = 14 days. 

When the Network hashrate is increasing; a difficulty ( 2016 blocks ) should take less than 14 days.  How much less can be estimated by comparing the % Network hashrate growth + what the Network hashrate was at the beginning of the difficulty ( 2016 blocks ) against what the Network hashrate was at the beginning of the difficulty ( 2016 blocks ).  This is only an estimate because you cannot account for "luck"; but you can calculate reasonably well using explicitly delimited stochastic ranges.

The easy way to think about this is to look at this graph and see how close to 0 the current data points are on its y axis.  If the blue line is above 0 the difficulty ( 2016 ) blocks should take less than 14 days; if it is below it should take more. It hasn't been below 0 in a very long time.

http://bitcoin.sipa.be/growth-10k.png

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[Blockhunter]

https://youtu.be/4uHwIkVGA9I

Here is a short video of Unboxing S5+ from ITOP-corp
 

[Blockhunter]

https://youtu.be/4uHwIkVGA9I

Here is a short video of Unboxing S5+ from ITOP-corp
 

https://www.youtube.com/watch?v=itpcni266aA
Quick video setting up the S5+

Here's the first run but one board failed due to paper clip jumper on PSU

https://www.youtube.com/watch?v=mnjPqqQxZWI

[Blockhunter]

I've got a couple more videos uploading on you tube if anyone wants to see a bit more about this.
It really is quite nice. The total weight seems to be the same as 2 S3's
It seems built sturdy the sound was t nearly as bad as expected. Up close about 90db and 2 feet away 75db
I anticipate a much louder operation running the 2880 IBM PSU's but this was tested with corsair 750 Gold @ each blade. @353W/blade X9 plus fans and control board. Running factory clock settings
I will get as much info out as I can as soon as I can.

[tutorialevideo]

nice what is the real performance in the pool?

[majestymage]

if someone manages to find a push=>pull solution for more quiet fans i think i will by one of this babies...if not, i'll just wait for the s7.

[Blockhunter]

nice what is the real performance in the pool?

we are seeing 7.7- 8.0 TH at stock settings

[Blockhunter]

nice what is the real performance in the pool?

we are seeing 7.7- 8.0 TH at stock settings

[dogie]

nice what is the real performance in the pool?

we are seeing 7.7- 8.0 TH at stock settings

Damn those fans are going flat out, and seemingly without reason. If you're at 25C ambient, then even at a 40C ambient those chips would be at 60C = still far below the cutoff. May be able to get away with removing / unplugging the front 3 fans, especially at that ambient.

[Blockhunter]

nice what is the real performance in the pool?

[Blockhunter]

nice what is the real performance in the pool?

we are seeing 7.7- 8.0 TH at stock settings

Damn those fans are going flat out, and seemingly without reason. If you're at 25C ambient, then even at a 40C ambient those chips would be at 60C = still far below the cutoff. May be able to get away with removing / unplugging the front 3 fans, especially at that ambient.

We are going to see what happens will post results soon.

[Blockhunter]

You can see we changed the freq up a bit

[Blockhunter]

nice what is the real performance in the pool?

we are seeing 7.7- 8.0 TH at stock settings

Damn those fans are going flat out, and seemingly without reason. If you're at 25C ambient, then even at a 40C ambient those chips would be at 60C = still far below the cutoff. May be able to get away with removing / unplugging the front 3 fans, especially at that ambient.

We removed front fan power and
Noise level was the same, chips immediately rose to 70C back fans spun to 4700rpm we aborted test.

[sajidfbi]

https://youtu.be/4uHwIkVGA9I

Here is a short video of Unboxing S5+ from ITOP-corp
 

https://www.youtube.com/watch?v=itpcni266aA
Quick video setting up the S5+

Here's the first run but one board failed due to paper clip jumper on PSU

https://www.youtube.com/watch?v=mnjPqqQxZWI

A humble request to upload some better quality video's instead of the one you have uploaded,we really can't see anything proper in your videos,that's quite disappointing.

[Blockhunter]

https://youtu.be/4uHwIkVGA9I

Here is a short video of Unboxing S5+ from ITOP-corp
 

https://www.youtube.com/watch?v=itpcni266aA
Quick video setting up the S5+

Here's the first run but one board failed due to paper clip jumper on PSU

https://www.youtube.com/watch?v=mnjPqqQxZWI

A humble request to upload some better quality video's instead of the one you have uploaded,we really can't see anything proper in your videos,that's quite disappointing.

I will have better quality videos posted soon.
Sorry those were quick videos from my iPhone

[QuintLeo]

You can see we changed the freq up a bit

 I wonder why Fan 2 is higher than the others? A few RPM sure, but 240ish seems like something is partly blocking it, different model from the rest FNAR, or something wierd going on?


 Are the front fans push or pull? If they're push, would make more sense to try unplugging the rear fans and see how that affects cooling IMO.

[Blockhunter]

https://youtu.be/pu6qtsuw8-4

I hope this is a bit better quality.
I will post more tests and vids soon.

[VirosaGITS]

https://youtu.be/pu6qtsuw8-4

I hope this is a bit better quality.
I will post more tests and vids soon.

This is fairly reasonable for homemade ghetto videos She is loud as fuck xD

If i ever get one somehow i'll have to replace absolutely all the fans.

[Blockhunter]

[Blockhunter]